Academic Notes 2.13.3

• Save layout recordings as visible Markdown notes through the vault API and verify each write. View recording/Open saved report buttons remove reliance on hidden JSON files. Reports stay available for retry after failed saves.
• Calibrate rendered non-final KP lines using actual right-edge measurements, distributing small residuals through existing gaps. Preserve line breaks, text, inline formulas, links, the natural final line and one QED; use native layout for unsupported geometry.
• Add coverage for narrow/wide callouts, 1px tracking, divergent fragment/final shaping metrics, visible vault files, readback failures and retries. Extend opt-in diagnostics with viewport changes and anonymous hit targets.
• Update both usage guides. Private device recordings are not published. The remaining physical iPad scrolling freeze still needs device verification; no fix is claimed.

Validation: Node regressions, TypeScript, mobile bundle loading without Node/Electron, real browser/CodeMirror tests, diagnostic vault save/readback/retry coverage and existing PDF/figure/print-isolation checks.

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